The men were arrested at an event at Racecourse Road venue about 10pm on Friday, 1 March. Police will make an application to extradite them back to Victoria.

A man was arrested by police in Bankstown in NSW last night. Picture: NSW Police ForceSource:AAP

Dramatic scenes show the suspect strapped to a stretcher while officers make the arrest. Source: NSW Police ForceSource:AAP

Police will attempt to extradite the two men to Victoria. Picture: NSW Police ForceSource:AAP

Police released this image of Ali El Nasher, who is also wanted in connection with the shooting. Source: Victoria PoliceSource:Supplied

Police also want to speak to Brunswick man Abdullah El Nasher and a fourth man.

Police believe the parties involved were known to each other, and released images of the arrested men on March 3 during their investigations.

The boxing match had been packed to capacity with about 1000 fans. Media reported the match was attended by high profile underworld figures Mick Gatto and Toby Mitchell and members of the Haddara family.

The arrested men are expected to appear in the Parramatta Bail Court on Saturday, when police will apply for the men to be extradited back to Victoria.

The police anti-gang Echo Taskforce has taken over the investigation.

Police are appealing for witnesses to the shooting to come forward.

Two men arrested in Sydney's south-west over Melbourne shooting

Two men have been arrested in Sydney’s south-west following an interstate manhunt over a Melbourne shooting, which left one man dead and two others injured.